Sangaku Journal of Mathematics Published by the Association for the Development of Education, Sofia, Bulgaria About this Journal   |   Editorial Board  |   Instructions for Authors   |   Review Process   |   Links About this Journal Sangaku Journal of Mathematics (SJM) is an open-access electronic journal devoted to geometry problems in the Wasan tradition. Wasan refers to traditional Japanese mathematics of the Edo period. For a brief introduction to Wasan, see the article "Japanese mathematics" in SJM volume 1. The main aims of SJM are: To publish original research papers and survey articles on Wasan geometry and related topics. To propose geometry problems in the spirit of Wasan. To publish problem solutions.